The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 2021
Filed:
Jul. 11, 2016
Osaka University, Suita, JP;
OSAKA UNIVERSITY, Suita, JP;
Abstract
Provided are a simple and effective friction welding method that can suppress increases in hardness of the welded part and reductions in hardness (strength) in the heat affected zone regardless of the composition of ferrous material, and a welded structure obtained with the same. The present invention relates to a friction welding method wherein surfaces to be welded of two metal members () to be welded are made to slide in contact with each other. The friction welding method is characterized in that at least one of the metal members () to be welded is a ferrous material, and the maximum temperature reached during welding is equal to or less than the Apoint or equal to or less than the Apoint of the ferrous material. The maximum temperature reached during welding is preferably equal to or less than the A1 point of the ferrous material.